.btn_xs{
  border: 1px solid #e6e6e6;
  padding: 1px 12px;
  background: #ffffff;
  border-radius: 12px;
  outline: none;
  &:hover{
    border-color: $theme_color;
    color: $theme_color;
  }
}
.btn_theme{
  background: #f96014;
  color: #ffffff;
  line-height: 30px;
  border: 1px solid $theme_color;
  text-align: center;
  &:hover{
    color: #ffffff;
    background: rgba($theme_color,0.8);
  }
}
@mixin  btn_theme($height){
  background: #f96014;
  color: #ffffff;
  line-height: $height;
  border: 1px solid $theme_color;
  text-align: center;
}
.btn_nb{
  background: none;
  border: none;
  outline: none;
  &:hover{
    background: #e6e6e6;
  }
}
.btn_gray{
  background: #f7f7f7;
  padding: 0 15px;
  border: 1px solid $border_color;
}